Home / 6,118.70-8,440.43-3,991.55

Finding the Fourth Proportional to 6,118.70, 8,440.43 and 3,991.55

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Solution

The fourth proportional to 6,118.70, 8,440.43 and 3,991.55 is: 5,506.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,118.70 : 8,440.43 = 3,991.55 : x
  2. Step 2: Convert to fraction form
    6,118.70/8,440.43 = 3,991.55/x
  3. Step 3: Cross multiply
    6,118.70x = 8,440.43 × 3,991.55
  4. Step 4: Simplify right side
    6,118.70x = 33,690,336.21
  5. Step 5: Solve for x
    x = 33,690,336.21/6,118.70
  6. Step 6: Final answer
    x = 5,506.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.